Initial commit

internal/database/database.go

@@ -0,0 +1,53 @@
+package database
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	_ "github.com/joho/godotenv/autoload"
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
+)
+
+type Service interface {
+	Health() map[string]string
+}
+
+type service struct {
+	db *mongo.Client
+}
+
+var (
+	host = os.Getenv("BLUEPRINT_DB_HOST")
+	port = os.Getenv("BLUEPRINT_DB_PORT")
+	//database = os.Getenv("BLUEPRINT_DB_DATABASE")
+)
+
+func New() Service {
+	client, err := mongo.Connect(context.Background(), options.Client().ApplyURI(fmt.Sprintf("mongodb://%s:%s", host, port)))
+
+	if err != nil {
+		log.Fatal(err)
+
+	}
+	return &service{
+		db: client,
+	}
+}
+
+func (s *service) Health() map[string]string {
+	ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
+	defer cancel()
+
+	err := s.db.Ping(ctx, nil)
+	if err != nil {
+		log.Fatalf(fmt.Sprintf("db down: %v", err))
+	}
+
+	return map[string]string{
+		"message": "It's healthy",
+	}
+}

internal/database/database_test.go

@@ -0,0 +1,61 @@
+package database
+
+import (
+	"context"
+	"log"
+	"testing"
+
+	"github.com/testcontainers/testcontainers-go/modules/mongodb"
+)
+
+func mustStartMongoContainer() (func(context.Context) error, error) {
+	dbContainer, err := mongodb.Run(context.Background(), "mongo:latest")
+	if err != nil {
+		return nil, err
+	}
+
+	dbHost, err := dbContainer.Host(context.Background())
+	if err != nil {
+		return dbContainer.Terminate, err
+	}
+
+	dbPort, err := dbContainer.MappedPort(context.Background(), "27017/tcp")
+	if err != nil {
+		return dbContainer.Terminate, err
+	}
+
+	host = dbHost
+	port = dbPort.Port()
+
+	return dbContainer.Terminate, err
+}
+
+func TestMain(m *testing.M) {
+	teardown, err := mustStartMongoContainer()
+	if err != nil {
+		log.Fatalf("could not start mongodb container: %v", err)
+	}
+
+	m.Run()
+
+	if teardown != nil && teardown(context.Background()) != nil {
+		log.Fatalf("could not teardown mongodb container: %v", err)
+	}
+}
+
+func TestNew(t *testing.T) {
+	srv := New()
+	if srv == nil {
+		t.Fatal("New() returned nil")
+	}
+}
+
+func TestHealth(t *testing.T) {
+	srv := New()
+
+	stats := srv.Health()
+
+	if stats["message"] != "It's healthy" {
+		t.Fatalf("expected message to be 'It's healthy', got %s", stats["message"])
+	}
+}